The earliest possible detection of quagga and zebra mussels has long been a goal of biologists seeking to discover their presence in water bodies. (sciencedaily.com)
The study found that the most important approach to the earliest possible detection of a significant sea level acceleration lies in improved understanding (and subsequent removal) of interannual (occurring between years, or from one year to the next) to multidecadal (involving multiple decades) variability in sea level records. (sciencedaily.com)
(This was judged to occur in mid-pregnancy, a position that did not become untenable until, again, after the 1830s, when the invention of the stethoscope first made possible the detection of the early fetal heartbeat.) (firstthings.com)